One of the answers is the letter C parallelogram
Answer:
X=-8
Step-by-step explanation:
18+x=10
-18 -18
x=-8
Answer:

Step-by-step explanation:
<u>Point slope form</u>
y=mx +c, where m is the gradient and c is the y-intercept.
To find the gradient, use the formula below:


Substitute the value of m into the equation

To find c, substitute a coordinate into the equation.
When x= -3, y=7,

Thus, the equation of the line is 
Answer:
Step-by-step explanation:
Opposite (or in The US, vertical) angles are congruent.
Adjacent ( on the same line) angles are supplementary (that is their sum = 180 degrees).